Weight 'C'.
Features a fluted base to provide additional clearance from the riser.
50mm x 15.3mm x 5/16" UNF.
150grams

Weight 'D'
Flat weight. 50mm x 6.75mm x 5/16 UNF.
100grams

Please Note: Only Weight 'C' comes supplied with a screw, this is long enough to stack both 'C' and 'D' weight.